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Water Area Extraction from RGB Aerophotograph Based on Chromatic and Textural Analysis

Authors:
Meng Zhao
Huazhe Shang
Wenchao Huang
Lizhi Zou
Yongjun Zhang

Keywords: CIELAB; chromatic analysis; textual analysis; watershed segmentation; ISODATA

Abstract:
When triangulating RGB aerophotograph, if automatically and randomly selected matching pass points unfortunately locates into water areas, these points, limited by their inaccuracy, will decrease the precision of triangulation. Therefore, extraction of water area beforehand is conducive to eliminate water falling pass points and guarantee the quality of aerotriangulation. A new methodology to extract water area from RGB aerophotograph is put forth in this paper. Procedure initiates by segmenting the whole aerophotograph into homogenous and united segments. Subsequently, compute chromatic and textural features of every segment and compare each segment’s features to sampled water segments’ features. Finally extract those segments whose chromatic and textural features are similar to sampled segments’ as water areas. This methodology has a relatively obvious merit in effectiveness and generality.

Pages: 46 to 52

Copyright: Copyright (c) IARIA, 2011

Publication date: February 23, 2011

Published in: conference

ISSN: 2308-393X

ISBN: 978-1-61208-118-2

Location: Gosier, Guadeloupe, France

Dates: from February 23, 2011 to February 28, 2011